**About the Editor**

**Sergey N. Grigoriev** (Doctor of Engineering Science, Professor) is head of the department of High-Efficiency Processing Technologies of Moscow State University of Technology "STANKIN". The scientific team of the department was awarded at the most prestigious international scientific competitions and exhibitions under the supervision of Dr. of Eng. Sci., Prof. S. N. Grigoriev. The researchers and academic staff of the department are winners of grants of the President for the leading scientific schools in the field of Engineering and Technical Sciences, and are invited lecturers at conferences and editors of international scientific journals.
